Vitamin B12 ia an interesting biomolecule. It is important to know about its structure and properties.

What is the molecular structure of Vitamin B12 and how is it important in our life.

calculate the volume in mL of 1.50 M BaCl2 required to produce 57.2 g. of AgCl acording to the following chemical equation.

AgNo cubed(aq) + BaCl squared(aq) - AgCl(s) + Ba(No cubed)squared(aq)

Calculate the molecular formula of this compound if the molecular weight is 416.4 g/mole

When Barium metal is heated in chlorine gas, a binary compound forms that consists of 65.95% Ba and 34.05% Cl by mass. Calulate the molecular formula of this compound if the molecular weight is 416.4 g/mole.

Calculate the following: The energy, in J, required to heat 1.5 g. of iron from 20.0 deg.C. to 29 deg.C. (s iron =0.45 J/(g. deg.C)

The energy, in J, required to heat 1.5 g.of iron from 20.0 degree C. to 29 degree C.(s iron=0.45 J/(g. degree C.)

Calculate the following: the mass, in g. of carbon in a sample that requires 530 J to heat from 23.6 degree C. to 54.2 degree C (s carbon= 0.71 J /(g.degree C.)

The mass, in g. of carbon in a sample that requires 530 J to heat from 23.6 degree C. to 54.2 degree C. (s carbon=0.71 J/(g.degree C.)